“In his days Judah will be saved, and Israel will dwell securely. And this is the name by which he will be called: ‘The LORD is our righteousness'” (Jeremiah 23:6, ESV)

The capitalized LORD renders the divine name, Yahweh, which in olden time was often rendered “Jehovah.” The word “righteousness” in Hebrew can be transliterated (i.e., put in English letters) like this: tsidkenu.